Water-heating device



E. A. SCHREIBER.

WATER HEATING DEVICE.

APPLICATION FI! en MAY 26,'l919.

l Pateted June 22, 1920.

2 SHEETS-SHEET I.

E. A. SCHREIBEH.

WATER HEATING DEVICE.

APPLICATION FILED MAY 2s, I9I9.

1 ,343,937. Patented June 22, 1920.

2 SHEETS-SHEET 2- UNITED STATES "PATENT .OFFICEr i l EDWARD A.SCHREIBER, l10FcIIIcli'eo, ILLINOIS, AssIGNoR 'ro vvaron. can HEATING"ooMraNY, INC., oF CHICAGO, ILLINoIs, a coRroRA'rIoN or NEW-YORK,

`wirrEIt-IIIazA'IINey DEVICE.

To all whom tmc/y concern.' v

Be it know-n that I, EDWARD A. SCHREIBEN, a citizen of theiUnitedStates, residing at Chicago, in the county ofCook and State of Illinois,have invented certain ynew and useful Improvements in `Water-Heating lDevices, of lwhich the following is a specificaf tion.

VMy. invention relates toa waterheating l deviceof the typefused inrailway service for heating water either by means ofa local fire or bysteam taken from the locomotivey attached to the end lturns .of thecoil. i

boiler, the device comprising a rstove or heater casing containing oneor more duplex pipe coils, usually-.two ofl such ycoils,each duplex coilconsisting of twopipes one with,

- in the other, the inner one fory steam and the outer one for thecirculation of the water tobeheated. l w

Considerable diflicultyhas been experienced in bending the. endsofthe-outerpipe of the coil so that they will .pass throughy the stovewall orcasingvof .theheater" in proper spaced relation with each otherand Y the pitch of the turns of the coil with which they arerespectively associated, and atthe saine time should bend, horizontally,in the direction reverse to the curvature of said turns. If -theextremities of the pipe itself are bent to these curvatures as has beencustomary, the cross sectional configuration of the pipe is likely to bechanged, that is, the pipe isv apt to be flattened or crushed inslightly and the resultant irregularity in the cross sectionalconfiguration of its bore at these places interferes with the uniformflow of water through the terminal portions of the coil. Moreover, it isdifficult to bend a pipe of this diameter accurately and accuracy isessential since the pipes must pass through and fit snugly in the holesformed for the pipes `in the heater casing. These holes are cut orotherwise formed before the heater is assembled so that any slightinaccuracy in the bending of the coil terminals makes the assembling ofthe parts of the heater difficult.` Little or no diiculty is experiencedwith the inner pipe of panying drawings wherein sp'ecmcation'lof LeersPatent. Patented June 22, 1920 Application med May 2e, '1919.` serial110.299,956. i

ameter. l

Theobject of this invention is to facilii tate the manufacture of aduplex coil and the.y assembling of the coil in the heater casing byy'providing,separately formed terminal .fittings for the outerior watercoil orcoils which may be cast or otherwise fabricated to khave a boreofsuostantially uni formcross sectional configuration and the -propercurvatures to give such-fittings the correct position in the heaterJcasing when The invention is illustrated in the accomy i. i I1gure 1shows a heater having two duplex coils constructed in accordance with fmy invention. f

Eig. ,2 isl a longitudinal, `vertical section throughlone of theterminal fittings of lone of the coils.

Fig. 2.

Fig. 5 is a sectional plan on line 5-5 of Fig. 1, and Fig. 6 is afragmentary view, in elevation, of the upper part of the back of theheater showing the relation of the terminal portions of the two duplexcoils.

Like characters of reference designate like parts in the several figuresof the drawings. Y

Except so far as the construction of the duplex coil is concerned, theheater shown in the drawings is of familiar type. 1() is the cylindricalcasing of the heater which is divided at the lower end with a grate 11.The heater here shown is of the base burning ty Ve, 12 being the coalmagazine and 13 the stack. It will be understood that the improved coilherein claimed might be used in connection with a heater of quitedifferent construction from that here shown. Within the casing 10 arearranged two du- Iplex coils A and B which may be substan- 'Fig'- 3 is asectional planA on line 3-3 of 'F1g..2. f. i f L y Y Fig. 4 is a crosssection on line 4-4 of of the end portion of the pipe coil so that theouter end of the fitting will. pass horizontally through the opening19in the casing close to and in parallelism with a diainetricial line a,a, (Fig. through the casing. The fitting 18 is tapped for a Water pipe20. rlhe fitting is preferably cast, With the curvatures noted, and itsbore is of substantially uniform cross sectional con'- figuration fromend to end of the fitting. The inner pipe l of the coil, the pipethrough which steam is circulated, instead of terminating at the fitting18, as in the case of the outer pipe, is continued through the fitting,being bent to corespondlto the curvatures of the fitting, the projectingendk 1. In a water heater, the combination of a casing having an openingythrough the wall thereof, a duplex coil insaid' `casing comprisinginner and outer helical pipe coils, and a fitting adapted to be attachedto' the end of the outer pipe coil and topass through said opening inthe casing, said fitting being curved reversely tothe curvature of theportion of the coil to which it `he upper end' `is attached and having abore of substantially uniform cross sectional area throughout itslength, the outer endlof saidY inner pipe coil being bent to correspondto the curvatures of said fitting and adapted to lie concentricallyWithin the bore thereof7 whereby there is provided Within the bore ofsaid fitting around said inner pipe coil an annular: Space ofsubstantially uniform cross sectional area through Which the heatingmedium may flow unobstructedly.

'2; I-n a= Water heater, the combination of a easing having aniopeningthrough the'wall thereof,.a duplexcoil insaidv casing comprising innerand1 outer helical pipe coils, and` a fitting adapted: tobel attachedrvto `theend of the outer pipe coil. andi to pass through said opening inthe easing, said fitting being eurvedi reversely to the curvature of theportion of the coil to whichA it isV attached andfto the pitcheo-fsaidpontion of the coiland having a bore of substantially uniform crosssectional. area throughout its len l1, the outery end of said innerpipeceil being bent to'y correspond toe the eurvatures of sai-d littinglafnd. adapted to lie concentrically Within the bore thereof, wherebythere is pro videdwithin the bore of. said fitting around said innerpipe coil an annular space of substantially` uniformi cross sectionalarea through. which the heating medium.: may flow unobstructedly. v

i EDWARDA. SCHREIBER.

